メタデータ
| 項目 |
値 |
| Designation |
C/1985 T1 (Thiele) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1985-12-19T05:04:22.480320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:33Z |
| Obs used |
133 |
| NEO |
- |
| M1 |
9.900 |
| K1 |
13.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1985-12-16.0000000 |
| e |
0.98328249 |
| q (au) |
1.317141 |
| a (au) |
78.788093 |
| i (deg) |
139.069283 |
| Ω (om, deg) |
53.012812 |
| ω (w, deg) |
53.000230 |
| M (ma, deg) |
359.995474 |
等級
散乱 + 全体線形
$$
M_a = (6.369 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.369 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| k |
1.000 |
| δ90 |
10.000 |
| パラメータ |
記号 |
範囲 |
説明 |
| 太陽・地球距離が1 AUのときの絶対等級 |
H0 |
-5 to 20 |
彗星の固有の明るさ |
| 測光スロープパラメータ |
n |
2 to 6 |
太陽距離に対する明るさ変化率 |
| 前方散乱非対称係数 |
gf |
0.8 to 1 |
前方散乱の強さ |
| 後方散乱非対称係数 |
gb |
-1 to -0.5 |
後方散乱の強さ |
| 分配係数 |
k |
0.8 to 1 |
前方/後方散乱の寄与比 |
| ダスト/ガス明るさ比 |
δ90 |
1 to 10 |
ダスト散乱とガス放射の相対寄与 |
参考: EPSC-DPS2025-160
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
12:32:55.14 |
-30:45:23.7 |
HIP 61133 |
21.29 |
| 2026-06-01 12:00 |
12:32:54.05 |
-30:45:06.8 |
HIP 61133 |
21.30 |
| 2026-06-02 00:00 |
12:32:52.97 |
-30:44:49.9 |
HIP 61133 |
21.30 |
| 2026-06-02 12:00 |
12:32:51.91 |
-30:44:33.1 |
HIP 61133 |
21.32 |
| 2026-06-03 00:00 |
12:32:50.86 |
-30:44:16.3 |
HIP 61133 |
21.35 |
| 2026-06-03 12:00 |
12:32:49.84 |
-30:43:59.5 |
HIP 61133 |
21.38 |
| 2026-06-04 00:00 |
12:32:48.82 |
-30:43:42.7 |
HIP 61133 |
21.43 |
| 2026-06-04 12:00 |
12:32:47.83 |
-30:43:26.0 |
HIP 61133 |
21.48 |
| 2026-06-05 00:00 |
12:32:46.85 |
-30:43:09.3 |
HIP 61133 |
21.53 |
| 2026-06-05 12:00 |
12:32:45.89 |
-30:42:52.7 |
HIP 61133 |
21.60 |
| 2026-06-06 00:00 |
12:32:44.94 |
-30:42:36.1 |
HIP 61133 |
21.67 |
| 2026-06-06 12:00 |
12:32:44.02 |
-30:42:19.5 |
HIP 61133 |
21.75 |
| 2026-06-07 00:00 |
12:32:43.10 |
-30:42:03.0 |
HIP 61133 |
21.84 |
| 2026-06-07 12:00 |
12:32:42.21 |
-30:41:46.5 |
HIP 61133 |
21.93 |
| 2026-06-08 00:00 |
12:32:41.33 |
-30:41:30.0 |
HIP 61133 |
22.03 |
| 2026-06-08 12:00 |
12:32:40.47 |
-30:41:13.6 |
HIP 61133 |
22.14 |
| 2026-06-09 00:00 |
12:32:39.63 |
-30:40:57.2 |
HIP 61133 |
22.25 |
| 2026-06-09 12:00 |
12:32:38.80 |
-30:40:40.9 |
HIP 61064 |
22.23 |
| 2026-06-10 00:00 |
12:32:37.99 |
-30:40:24.6 |
HIP 61064 |
22.06 |
| 2026-06-10 12:00 |
12:32:37.20 |
-30:40:08.4 |
HIP 61064 |
21.90 |
| 2026-06-11 00:00 |
12:32:36.42 |
-30:39:52.2 |
HIP 61064 |
21.74 |
| 2026-06-11 12:00 |
12:32:35.66 |
-30:39:36.1 |
HIP 61064 |
21.59 |
| 2026-06-12 00:00 |
12:32:34.92 |
-30:39:20.0 |
HIP 61064 |
21.44 |
| 2026-06-12 12:00 |
12:32:34.20 |
-30:39:03.9 |
HIP 61064 |
21.31 |
| 2026-06-13 00:00 |
12:32:33.49 |
-30:38:47.9 |
HIP 61064 |
21.18 |
| 2026-06-13 12:00 |
12:32:32.80 |
-30:38:32.0 |
HIP 61064 |
21.06 |
| 2026-06-14 00:00 |
12:32:32.13 |
-30:38:16.1 |
HIP 61064 |
20.94 |
| 2026-06-14 12:00 |
12:32:31.48 |
-30:38:00.3 |
HIP 61064 |
20.83 |
| 2026-06-15 00:00 |
12:32:30.84 |
-30:37:44.6 |
HIP 61064 |
20.73 |
| 2026-06-15 12:00 |
12:32:30.23 |
-30:37:28.9 |
HIP 61064 |
20.64 |
| 2026-06-16 00:00 |
12:32:29.63 |
-30:37:13.2 |
HIP 61064 |
20.56 |
| 2026-06-16 12:00 |
12:32:29.04 |
-30:36:57.7 |
HIP 61064 |
20.48 |
| 2026-06-17 00:00 |
12:32:28.48 |
-30:36:42.2 |
HIP 61064 |
20.41 |
| 2026-06-17 12:00 |
12:32:27.93 |
-30:36:26.7 |
HIP 61064 |
20.34 |
| 2026-06-18 00:00 |
12:32:27.40 |
-30:36:11.3 |
HIP 61064 |
20.29 |
| 2026-06-18 12:00 |
12:32:26.89 |
-30:35:56.0 |
HIP 61064 |
20.24 |
| 2026-06-19 00:00 |
12:32:26.39 |
-30:35:40.8 |
HIP 61064 |
20.20 |
| 2026-06-19 12:00 |
12:32:25.92 |
-30:35:25.6 |
HIP 61064 |
20.16 |
| 2026-06-20 00:00 |
12:32:25.46 |
-30:35:10.5 |
HIP 61064 |
20.13 |
| 2026-06-20 12:00 |
12:32:25.02 |
-30:34:55.4 |
HIP 61064 |
20.11 |
| 2026-06-21 00:00 |
12:32:24.59 |
-30:34:40.5 |
HIP 61064 |
20.10 |
| 2026-06-21 12:00 |
12:32:24.19 |
-30:34:25.6 |
HIP 61064 |
20.09 |
| 2026-06-22 00:00 |
12:32:23.80 |
-30:34:10.8 |
HIP 61064 |
20.09 |